Your air conditioner needs to get air circulating in and out of the house for your house to maintain a cool temperature. Anything that interferes with air circulation interferes with effective cooling. Below are some AC problems that can affect airflow.
The filter cleans the air before it enters the AC. That way your AC doesn't get clogged with dust and you also get to enjoy clean air. After some time, the filter will get clogged with dust at which point you need to replace it. If you don't replace the filter, the clogging won't allow air to flow through as usual and you will experience reduced cooling.
Ducts distribute air into different rooms and also channel stale air back to the AC for cooling. Thus, blocked ducts will also restrict airflow. Dead animals and damaged ducts are some of the common causes of such restrictions.
It is not just blocked ducts that interfere with airflow; leaky ducts also have the same purpose. Cracks or holes on the duct lines, which typically occur on the joints, allow air to flow out of the ducts without going through the vents and registers. As a result, the air that flows into and out of the rooms reduces and cooling efficiency falls.
Blocked Vents and Registers
The vents and registers are the openings that allow air to flow into and out of the ducts. Thus, if something blocks the openings, airflow into and out of individual rooms will suffer. This might happen, for example, if you accidentally place your house furniture or furnishings against the vents.
Fan or Fan Motor Damage
The fan motor drives the fan that forces the air to flow throughout the house. The motor runs on electricity, which means it can malfunction if it experiences an electrical fault. The fan won't rotate if the motor is dead. Physical damage to the fan (rare but possible) can also impede air circulation.
The thermostat doesn't facilitate airflow per se. However, the thermostat sends signals to the AC to start, maintain, or stop cooling. Thus, a malfunction of the thermostat can prevent airflow since the AC won't receive the signals to start cooling.
Hopefully, your AC's design allows air to circulate freely in your house. Proper design and maintenance of the cooling system will help you do that. Contact residential air conditioning services for a diagnosis and solution for your home.